英语词汇“mental arithmetic”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	mental arithmetic
释义	mental arithmetic noun /ˌmentl əˈrɪθmətɪk/ /ˌmentl əˈrɪθmətɪk/ [uncountable] jump to other results adding, multiplying, etc. numbers in your mind without writing anything down or using a calculator
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